Path: utzoo!attcan!uunet!samsung!munnari.oz.au!uniwa!pico!dean
From: dean@pico.oz (Dean Economou)
Newsgroups: sci.electronics
Subject: Re: time accuracy in telephone service billing
Message-ID: <477@pico.oz>
Date: 29 May 90 05:38:58 GMT
References: <285@sphere.UUCP> <1021@gold.GVG.TEK.COM> <7560@tekgvs.LABS.TEK.COM> <287@sphere.UUCP>
Reply-To: dean@pico.qpsx.oz (Dean Economou)
Organization: QPSX Communications, Perth, West Australia.
Lines: 9
Summary:
Expires:
Sender:
Followup-To:
Distribution:
Keywords:

As far as I know, the telephone companies (RBOCs) use atomic
clocks throughout their digital hierachy, and they are very
careful not to overcharge.  I'd guess that they use the same
time reference for their billing too.  Whether such care
extends to the long haul carriers, I know not.


Dean Economou
[my opinions are independent of my employer's]